Search RFCafe.com                           
      More Than 18,000 Unique Pages
Please support me by ADVERTISING!
Serving a Pleasant Blend of Yesterday, Today, and Tomorrow™ Please Support My Advertisers!
   Formulas & Data
Electronics | RF
Mathematics
Mechanics | Physics
     AI-Generated
     Technical Data
Pioneers | Society
Companies | Parts
Principles | Groups


 About | Sitemap
Homepage Archive
        Resources
Articles, Forums Calculators, Radar
Magazines, Museum
Radio Service Data
Software, Videos
     Entertainment
Crosswords, Humor Cogitations, Podcast
Quotes, Quizzes
   Parts & Services
1000s of Listings
 Vintage Magazines
Electronics World
Popular Electronics
Radio & TV News
QST | Pop Science
Popular Mechanics
Radio-Craft
Radio-Electronics
Short Wave Craft
Electronics | OFA
Saturday Eve Post

Software: RF Cascade Workbook
RF Stencils for Visio | RF Symbols for Visio
RF Symbols for Office | Cafe Press
Espresso Engineering Workbook

Aegis Power  |  Alliance Test
Centric RF  |  Empower RF
ISOTEC  |  Reactel  |  RFCT
San Fran Circuits

Werbel Microwave (power dividers, couplers)

Windfreak Technologies Frequency Synthesizers - RF Cafe

Anatech Electronics RF Microwave Filters - RF Cafe

Please Support RF Cafe by purchasing my  ridiculously low-priced products, all of which I created.

RF Cascade Workbook for Excel

RF & Electronics Symbols for Visio

RF & Electronics Symbols for Office

RF & Electronics Stencils for Visio

RF Workbench

T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads

These Are Available for Free

Espresso Engineering Workbook™

Smith Chart™ for Excel

Axiom Test Equipment - RF Cafe

Day in Engineering History Archive - August 4

Day in Engineering History August 4 Archive - RF CafeU.S. Coast Guard was Established - Please click here to visit RF Cafe.August 4

1693: Champagne was invented by Dom Perignon. 1790: The U. S. Coast Guard was established. 1893: Herman A. Affel, co-inventor of coaxial cable, was born. 1921: The first radio broadcast of a tennis match occurred in Pittsburgh, PA. 1900: Etienne Lenoir, who developed the first commercially successful internal combustion engine, died. 1922: Every telephone in the U.S. and Canada went dead as Bell System shut down all its switchboards and switching stations for 1 minute, from from 6:25 to 6:26 PM, in memory of Alexander Graham Bell, who died two days earlier. 1954: Britain's first supersonic fighter plane, the P-1 English Electric Lightning, made its maiden flight. 1954 : The uranium rush began in Saskatchewan, Canada. 1971: The U.S. launched the first satellite (subsatellite) into lunar orbit from manned spacecraft as part of the Apollo 15 mission. 1977: U.S. Department of Energy was created. 1987: The FCC voted 4-0 to rescind the [un]Fairness Doctrine for broadcasters. 1998: The Dow Jones Industrial Average (DJIA) plunged 299.43 points, the 3rd-biggest point drop up to that time.

| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |

Note: These historical tidbits have been collected from various sources, mostly on the Internet. As detailed in this article, there is a lot of wrong information that is repeated hundreds of times because most websites do not validate with authoritative sources. On RF Cafe, events with hyperlinks have been verified. Many years ago, I began commemorating the birthdays of notable people and events with special RF Cafe logos. Where available, I like to use images from postage stamps from the country where the person or event occurred. Images used in the logos are often from open source websites like Wikipedia, and are specifically credited with a hyperlink back to the source where possible. Fair Use laws permit small samples of copyrighted content.

Axiom Test Equipment - RF Cafe
KR Electronics (RF Filters) - RF Cafe

Innovative Power Products (IPP) RF Combiners / Dividers

Anritsu Test Equipment - RF Cafe